diff --git a/services/source/inputinject/include/distributed_input_node_manager.h b/services/source/inputinject/include/distributed_input_node_manager.h
index c37973c..a624c41 100644
--- a/services/source/inputinject/include/distributed_input_node_manager.h
+++ b/services/source/inputinject/include/distributed_input_node_manager.h
@@ -116,7 +116,7 @@ private:
     void RunInjectEventCallback(const std::string &dhId, const uint32_t injectEvent);
 
     void RecordEvents(const RawEvent &event, VirtualDevice* device);
-    bool IsTouchPad(const std::string &deviceName);
+    bool IsTouchPad(std::string deviceName);
 
     void AddBtnMouseDownState(int32_t fd);
     void RemoveBtnMouseDownState(int32_t fd);
diff --git a/services/source/inputinject/src/distributed_input_node_manager.cpp b/services/source/inputinject/src/distributed_input_node_manager.cpp
index b664a1a..748bd73 100644
--- a/services/source/inputinject/src/distributed_input_node_manager.cpp
+++ b/services/source/inputinject/src/distributed_input_node_manager.cpp
@@ -513,7 +513,7 @@ void DistributedInputNodeManager::RunInjectEventCallback(const std::string &dhId
     SessionStateCallback_->OnResult(dhId, DINPUT_INJECT_EVENT_FAIL);
 }
 
-bool DistributedInputNodeManager::IsTouchPad(const std::string &deviceName)
+bool DistributedInputNodeManager::IsTouchPad(std::string deviceName)
 {
     DHLOGD("device name is %s.", deviceName.c_str());
     transform(deviceName.begin(), deviceName.end(), deviceName.begin(), ::tolower);